The mailqueue TYPO3 extension has Insecure Deserialization in `TransportFailure` class
Impact
The extension fails to properly define allowed classes used when deserializing transport failure metadata. An attacker may exploit this to execute untrusted serialized code. Note that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].
Source excerpt · OSVNote that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 0.4.5Ecosystem versions | 0.4.5 |
| From 0.5.0 before 0.5.2Ecosystem versions | 0.5.2 |
Version evidence: OSV · GHSA-2pm6-9fhx-vvg3
View original version evidence (16 explicit versions)
Original source description
Description
The extension fails to properly define allowed classes used when deserializing transport failure metadata. An attacker may exploit this to execute untrusted serialized code. Note that an active exploit requires write access to the directory configured at $GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_spool_filepath'].
References
- Security advisory github.com/CPS-IT/mailqueue/security/advisories/GHSA-2pm6-9fhx-vvg3
- Security advisory nvd.nist.gov/vuln/detail/CVE-2026-1323
- Patch github.com/CPS-IT/mailqueue/commit/0f7a1376bbbd8c7658030d02e51c10a85b1dfdf7
- Patch github.com/CPS-IT/mailqueue/commit/600c7dba99f8eea5f2505b848ee3dd4713440741
- Source reference github.com/CPS-IT/mailqueue
- Security advisory typo3.org/security/advisory/typo3-ext-sa-2026-005